Historic Centre of Arequipa
Arequipa, Peru
In December 2000, UNESCO declared the historical center of Arequipa a World Heritage Site, stating the following: "The historical center of Arequipa is an example of ornamented architecture, represents a masterpiece of the creative coalition of European and native characteristics. A colonial town challenged by the conditions of nature, the indigenous influences, the conquest process and evangelism as well as for a spectacular natural scenario."
Monument data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).